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Abstract

This document describes how to use the Alternative Network Address Types (ANAT) semantics of the Session Description Protocol (SDP) grouping framework in SIP. In particular, we define the sdp-anat SIP option-tag. This SIP option-tag ensures that SDP session descriptions that use ANAT are only handled by SIP entities with ANAT support. To justify the need for such a SIP option-tag, we describe what could possibly happen if an ANAT-unaware SIP entity tried to handle media lines grouped with ANAT.

Copyright

Copyright (C) The Internet Society (2005).

Country

United States

Language

English (United States)

This text was extracted from an ASCII text file.

This is the abbreviated version, containing approximately
22% of the total text.

This document
specifies an Internet standards track protocol for the
Internet community, and requests
discussion and suggestions for
improvements. Please refer to the current edition of the
"Internet
Official Protocol Standards" (STD
1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C)
The Internet Society (2005).

Abstract

This document
describes how to use the Alternative Network Address
Types (ANAT) semantics of the Session
Description Protocol (SDP)
grouping framework in SIP. In particular, we define the sdp-anat SIP
option-tag. This SIP option-tag ensures that SDP session
descriptions that use ANAT are only
handled by SIP entities with ANAT
support. To justify the need for such a SIP
option-tag, we describe
what could possibly happen if an
ANAT-unaware SIP entity tried to
handle media lines grouped with ANAT.